<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="英文标题" prop="titleEn">
        <el-input
          v-model="queryParams.titleEn"
          placeholder="请输入英文标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="类别" prop="category">
        <el-input
          v-model="queryParams.category"
          placeholder="请输入类别"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-input
          v-model="queryParams.status"
          placeholder="请输入状态"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="子类别" prop="subCategory">
        <el-input
          v-model="queryParams.subCategory"
          placeholder="请输入子类别"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="英文类别" prop="categoryEn">
        <el-input
          v-model="queryParams.categoryEn"
          placeholder="请输入英文类别"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:down:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:down:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:down:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:down:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="downList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="id" align="center" prop="id" />
      <el-table-column label="标题" align="center" prop="title" />
      <el-table-column label="英文标题" align="center" prop="titleEn" />
      <el-table-column label="预览链接" align="center" prop="url" >
        <template slot-scope="scope">
          <a :href="scope.row.url"  target="_blank" >查看</a>
        </template>
      </el-table-column>
      <el-table-column label="类别" align="center" prop="category" />
      <el-table-column label="子类别" align="center" prop="subCategory" />
      <el-table-column label="下载链接" align="center" prop="downloadUrl" >
        <template slot-scope="scope">
          <a :href="scope.row.downloadUrl" >下载</a>
        </template>
      </el-table-column>
      <el-table-column label="图片" align="center" prop="image" width="100">
        <template slot-scope="scope">
          <image-preview v-if="scope.row.image != null && scope.row.image != ''"  :src="scope.row.image" :width="50" :height="50"/>
        </template>
      </el-table-column>
      <el-table-column label="英文类别" align="center" prop="categoryEn" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:down:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:down:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改资源下载对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="英文标题" prop="titleEn">
          <el-input v-model="form.titleEn" placeholder="请输入英文标题" />
        </el-form-item>
        <!--<el-form-item label="预览链接" prop="url">
          <el-input v-model="form.downloadUrl" type="textarea" placeholder="请输入内容" />
        </el-form-item> -->
        <el-form-item label="类别" prop="category">
          <el-input v-model="form.category" placeholder="请输入类别" />
        </el-form-item>
        <el-form-item label="子类别" prop="subCategory">
          <el-input v-model="form.subCategory" placeholder="请输入子类别" />
        </el-form-item>
        <el-form-item label="下载链接" prop="downloadUrl">
          <el-upload
            class="upload-demo"
            action="/prod-api/common/upload"
            :on-preview="handlePreview"
            :on-remove="handleRemove"
            :before-remove="beforeRemove"
            :headers="headers"
            :on-success="handleFileUploadSuccess"
            :limit="1"
            :on-exceed="handleExceed"
            :file-list="fileList">
            <el-button size="small" type="primary">点击上传</el-button>
          </el-upload>
          <el-input v-model="form.url" type="textarea" placeholder="请输入内容" disabled />
        </el-form-item>
        <el-form-item label="描述" prop="summary">
          <el-input v-model="form.summary" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="图片" prop="image">
          <image-upload v-model="form.image"/>
        </el-form-item>
        <el-form-item label="是否显示" prop="status">
          <el-radio-group v-model="form.status">
            <el-radio :label="0">隐藏</el-radio>
            <el-radio :label="1">显示</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="英文描述" prop="summaryEn">
          <el-input v-model="form.summaryEn" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="英文类别" prop="categoryEn">
          <el-input v-model="form.categoryEn" placeholder="请输入英文类别" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listDown, getDown, delDown, addDown, updateDown } from "@/api/system/down";
import { getToken } from '@/utils/auth';
export default {
  name: "Down",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 资源下载表格数据
      downList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      fileList:[],
      headers: {
        Authorization: "Bearer " + getToken(),
      },
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        titleEn: null,
        url: null,
        category: null,
        subCategory: null,
        downloadUrl: null,
        summary: null,
        image: null,
        status: null,
        summaryEn: null,
        categoryEn: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询资源下载列表 */
    getList() {
      this.loading = true;
      listDown(this.queryParams).then(response => {
        this.downList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        title: null,
        titleEn: null,
        url: null,
        category: null,
        subCategory: null,
        downloadUrl: null,
        summary: null,
        image: null,
        summaryEn: null,
        categoryEn: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.fileList = [];
      this.title = "添加资源下载";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getDown(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.fileList = [];
        this.title = "修改资源下载";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateDown(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addDown(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    handleRemove(file, fileList) {
      console.log(file, fileList);
    },
    handlePreview(file) {
      console.log(file);
    },
    handleExceed(files, fileList) {
      this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);
    },
    beforeRemove(file, fileList) {
      return this.$confirm(`确定移除 ${ file.name }？`);
    },
    handleFileUploadSuccess(response, file, fileList) {
      // console.log('Upload success', file, fileList);
      this.form.url = file.response.url;
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除资源下载编号为"' + ids + '"的数据项？').then(function() {
        return delDown(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/down/export', {
        ...this.queryParams
      }, `down_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
